Bochum 2018 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 1: Hadron Structure and Spectroscopy I
HK 1.5: Talk
Monday, February 26, 2018, 15:15–15:30, HZO 50
Measurement of η′ and f1(1285) production in two-photon collisions at BESIII — •Dominik Schollmayer, Achim Denig, and Christoph Florian Redmer — Institut für Kernphysik, Universität Mainz, Deutschland
To further improve on the uncertainty of the Standard Model prediction of the anomalous magnetic moment of the muon, precise data on the production of mesons in two-photon collisions are of interest. The BESIII experiment at the e+e− collider BEPCII in Beijing has collected more than 10 fb−1 of data at center of mass energies between 3.773 GeV and 4.6 GeV. Based on these data the production of the η′ and f1(1285) mesons in two-photon collisions is studied. The analysis aims at the determination of the radiative decay width and transition form factor in the region of momentum transfer below 3 GeV2. In this presentation we will give an overview of the current status of the analysis.
Supported by DFG (SFB 1044).